Astronomers searching for signs of life beyond Earth have spotted something strange. An as-yet unexplained radio signal appears to be coming from the direction of the star closest to the sun—a small ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Since 3D printers debuted in the 1980s, the devices have been used ...

Since we can’t talk to them, most folks' knowledge of animals begins and ends with some biology classes and maybe a pet, ...

Plant reproduction is highly complex and variable across the kingdom. The emergence of sexual reproduction has contributed to increase plant genetic diversity and enabled the colonisation of new ...

Elon Musk has repeatedly said he plans to put humans on Mars, yet the gap between that vision and reality remains wide. The ...

The Dark Forest theory is one proposed solution to the famed Fermi Paradox, which has bewitched astronomers for more than half a century. To put it concisely, the paradox asks if the cosmos is nearly ...